Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Question
Chapter 8, Problem 32P
(a)
To determine
The minimum number of bolt required to prevent the yielding of the bolt.
(b)
To determine
The minimum number of bolt required to prevent the joint separation.
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Students have asked these similar questions
For a bolted assembly with 8 bolts, the stiffness of
each bolt is k_b = 1.1 N/mm and the stiffness of the
members is k_m = 2.8 N/mm at each bolt location. The
joint is subject to occasional disassembly for
maintenance and should be preloaded accordingly (to
75% of the proof stress). Assume the external load is
equally distributed to all the bolts. It has been
determined to use M6 × 1 class 5.8 bolts with rolled
threads.
Determine the maximum safe working load that both
limits the stress in the bolts to be below the proof
stress and ensures that the members do not come out
of compression.
Express your answer in units of kilonewtons.
!
Required information
For a bolted assembly with N = 6 bolts, the stiffness of each bolt is kb=1 Mlbf/in and the stiffness of the members is km =
20 Mlbf/in per bolt. A repeated external load of W= 72 kips is applied to the entire joint. Assume the load is equally
distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume the bolts
are preloaded to 75 percent of the proof load and the external load is a repeated load.
Number of Bolts, N
Bolt Grade, G
Bolt Diameter, d
6
SAE 8
1/2 in
Determine the fatigue factor of safety for the bolts using the Goodman failure criterion.
The fatigue factor of safety for the bolts using the Goodman failure criterion is
For a bolted assembly, the stiffness of each bolt is ka = 700 MN/m and the stiffness of the
members is km = 2100 MN/m per bolt. The joint is subject to occasional disassembly for
maintenance and should be preloaded accordingly. An external load is applied to the entire
joint with P = 360 kN. Assume the load is equally distributed to all the bolts. It has been
determined to use M12x1.75 grade 8.8 bolts with rolled threads.
(a) Determine the minimum number of bolts necessary to avoid yielding of the bolts.
(b) Determine the minimum number of bolts necessary to avoid joint separation.
Chapter 8 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 8 - A power screw is 25 mm in diameter and has a...Ch. 8 - Using the information in the footnote of Table...Ch. 8 - Show that for zero collar friction the efficiency...Ch. 8 - A single-threaded power screw is 25 mm in diameter...Ch. 8 - The machine shown in the figure can be used for a...Ch. 8 - The press shown for Prob. 8-5 has a rated load of...Ch. 8 - For the screw clamp shown, a force is applied at...Ch. 8 - The C clamp shown in the figure for Prob. 8-7 uses...Ch. 8 - Find the power required to drive a 1.5-in power...Ch. 8 - A single square-thread power screw has an input...
Ch. 8 - Prob. 11PCh. 8 - An M14 2 hex-head bolt with a nut is used to...Ch. 8 - Prob. 13PCh. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - Repeat Prob. 8-14 with the addition of one 12 N...Ch. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - Two identical aluminum plates are each 2 in thick,...Ch. 8 - Prob. 18PCh. 8 - A 30-mm thick AISI 1020 steel plate is sandwiched...Ch. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - An aluminum bracket with a 12-in thick flange is...Ch. 8 - An M14 2 hex-head bolt with a nut is used to...Ch. 8 - A 34 in-16 UNF series SAE grade 5 bolt has a 34-in...Ch. 8 - From your experience with Prob. 8-26, generalize...Ch. 8 - Prob. 28PCh. 8 - Prob. 29PCh. 8 - Prob. 30PCh. 8 - For a bolted assembly with eight bolts, the...Ch. 8 - Prob. 32PCh. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - Prob. 37PCh. 8 - Prob. 38PCh. 8 - 837 to 840 Repeat the requirements for the problem...Ch. 8 - Prob. 40PCh. 8 - 841 to 844 For the pressure vessel defined in the...Ch. 8 - Prob. 42PCh. 8 - Prob. 43PCh. 8 - Prob. 44PCh. 8 - Bolts distributed about a bolt circle are often...Ch. 8 - The figure shows a cast-iron bearing block that is...Ch. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - Prob. 52PCh. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - For the pressure cylinder defined in the problem...Ch. 8 - A 1-in-diameter hot-rolled AISI 1144 steel rod is...Ch. 8 - The section of the sealed joint shown in the...Ch. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Prob. 63PCh. 8 - Prob. 64PCh. 8 - Using the Goodman fatigue criterion, repeat Prob....Ch. 8 - The figure shows a bolted lap joint that uses SAE...Ch. 8 - Prob. 67PCh. 8 - A bolted lap joint using ISO class 5.8 bolts and...Ch. 8 - Prob. 69PCh. 8 - The figure shows a connection that employs three...Ch. 8 - A beam is made up by bolting together two cold...Ch. 8 - Prob. 72PCh. 8 - Prob. 73PCh. 8 - Prob. 74PCh. 8 - A vertical channel 152 76 (see Table A7) has a...Ch. 8 - The cantilever bracket is bolted to a column with...Ch. 8 - Prob. 77PCh. 8 - The figure shows a welded fitting which has been...Ch. 8 - Prob. 79PCh. 8 - Prob. 80PCh. 8 - Prob. 81P
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- For a bolted assembly with six bolts, the stiffness of each bolt is kb = 2.8 Mlbf/in and the stiffness of the members is km= 14 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume the bolts are preloaded to 75 percent of the proof load. Determine the yielding factor of safety. The yielding factor of safety isarrow_forwardRequired information For a bolted assembly with eight bolts, the stiffness of each bolt is kb = 0.8 MN/mm and the stiffness of the members is km = 2.6 MN/mm per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. Assume the external load is equally distributed to all the bolts. It has been determined to use M6 x 1 class 5.8 bolts with rolled threads. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum external load Pmax that can be applied to the entire joint without causing the members to come out of compression. The maximum external load for this case is 0.15625 N.arrow_forwardQuestion two a) For a bolted assembly with ten bolts, the stiffness of each bolt is a= 10 MN/ and the stiffness of the members is ku 26 MN/mm per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. Assume the external load is equally distributed to all the bolts. IR has been determined to use M6 1 dass S8 bolts with rolled threads. (a) Determine the maximum external load Paa that can be applied to the entire joint without exceeding the proof strength of the boits. (b) Determine the maximum esternal load Pn that can be applied ta the entire joint without causing the members te come out of compression b) A holding fixture for a workpiece 37.5 mm thick at the clamp locations is being designed. The detailof ane of the clamps is shown in the figure (Problem 10-2). A spring is required to drive the clamp upward when removing the workpiece with a starting force of 65 N. The clamp screw has an M10 - 125 thread. Allowa diametral clearance of…arrow_forward
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